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KRI Nagapasa (403)

Diesel-Electric Attack Submarine

South Korea | 2017

"KRI Nagapasa 403, of South Korean origin, leads the three-strong Nagapasa-class diesel-electric subs for the Indonesian Navy."

Authored By: Staff Writer | Last Edited: 08/01/2023 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.
KRI Nagapasa (403) leads her three-strong Nagapasa-class of diesel-electric attack submarines for the modern Indonesian Navy. The boats are an original South Korean design with construction after the first boat now involving Indonesian shipyards. With the three in service, a further three remain on order (2023) and the class is fielded alongside the West German-born Cakra-class which constitutes just a single hull, KRI Cakra (KRI Nanggala tragically being lost in April 2021 with all hands aboard).

The boats represent the most modern of the undersea offerings of the Indonesian Fleet and are therefore a critical component to national defense and deterrence.

KRI Nagapasa was ordered in December of 2011 and saw her keel laid down by Daewoo Shipbuilding and Marine Engineering of South Korea on April 9th, 2015. Launched on March 24th, 2016, the boat was commissioned into service with the Indonesian Navy on August 2nd, 2017.

Externally, the design of Nagapasa is conventional with a tubular hull, rectangular sail, and blunt nosecone section. Internally, power is from 4 x MTU 12C493 diesel generators developing 5,000 horsepower propelling the boat to submerged speeds of 21.5 knots out to a range of 11,000 nautical miles. The hull has been tested to depths of 1,600 feet. Installed systems include the Kongsberg MSI-90U Mk.2 Combat Management System (CMS), the Atlas Elektronik CSU-90 active/passive sonar array, and the Wartsilia ELAC KaleidoSope sonar system. The crew numbers 40 men.

Displacement is 1,400 tons and the hull measures 201.1 feet long with a beam of 20.7 feet and a draught of 18.1 feet.

Armament is 8 x 533mm (21") torpedo tubes with 14 "Black Shark" torpedo reloads.

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Power & Performance
Those special qualities that separate one sea-going vessel design from another. Performance specifications presented assume optimal operating conditions for KRI Nagapasa (403).
4 x MTU 12V493 diesel generators developing 5,000 horsepower to 1 x Shaft astern.
11.0 kts
12.7 mph
Surface Speed
21.5 kts
24.7 mph
Submerged Speed
11,297 nm
13,000 miles | 20,921 km
The bow-to-stern, port-to-starboard physical qualities of KRI Nagapasa (403).
201.1 ft
61.30 meters
O/A Length
20.7 ft
6.31 meters
18.1 ft
5.52 meters
Available supported armament and special-mission equipment featured in the design of KRI Nagapasa (403).
8 x 533mm (21in) torpedo tubes supporting the Black Shark torpedo family; 14 torpedo reloads.
Ships-in-Class (3)
Notable series variants as part of the KRI Nagapasa (403) family line as relating to the Nagapasa-class group.
KRI Nagapasa (403); KRI Ardadedali (404); KRI Alugoro (405)
Global operator(s) of the KRI Nagapasa (403). Nations are displayed by flag, each linked to their respective national naval warfare listing.

Shipbuilder(s): Daewoo Shipbuilding and Marine Engineering - South Korea
National flag of Indonesia

[ Indonesia ]
1 / 1
Image of the KRI Nagapasa (403)
Official image from the Indonesian Navy; Public Release.

Going Further...
KRI Nagapasa (403) Diesel-Electric Attack Submarine appears in the following collections:
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